Your weight pushing down on the chair is the action force. The reaction force is the force exerted by the chair that pushes up on your body.
Answer:
10 years
Explanation:
As you can understand from the question it is given that the planet is already filled to half of its capacity. Also the population doubles in 10 years. To fill up the planet completely the population needs to double only once. To do that only 10 years are required.
As it is mentioned there are no other factors affecting the growth rate, in 10years the planet will be filled to its carrying capacity.
As oil ,coal ,gas ,solar ,wind and water power